You should try Dart/Flutter again, they've improved a lot.

- Dart. It's richer than JS/TS with stronger type safety, and seems purpose-built for UI. Fewer Dart developers than JS, but I'd argue those JS developers cannot be immediately effective coding React Native (Expo) anyway.

- Emulated components vs. real native components. For multi-platform apps, this is actually desirable. These kinds of apps have their own design system.

- Speed. In my experience, it's negligible, but maybe because I keep using the latest version.

- Ecosystem. Flutter/Dart occasionally introduces "breaking" changes (such as migration to null safety, and recently deprecation of CocoaPods). Community very quick to update their plugins and adapt. Some abandoned plugins were immediately forked to keep being maintained.

- Migrating to native platforms, easier for agents to read an RN project. I'd argue it should be _easier_ to do that with Dart since the language is less "ambiguous" than JS.

However it's not perfect. My complaints:

- Not ideal for web apps with lots of FIRST-time visitors, due to initial download. There are some attempts to solve this, e.g. deferred loading, but I think inherently it's unsolvable since you need to download the whole world (a few MBs) to have the app running on your browser. That's why for this scenario I use SvelteKit. But if you already have a mobile app and want to get a web app "for free", this is a useful feature.

- WebView support is inconsistent across platforms (I'm looking at you, Windows and Linux).

- Text fields are quirky on Android TV.